Consolidated Statements of Cash Flows - USD ($) $ in Millions	3 Months Ended
	May 31, 2023	May 31, 2022
Cash flows from operating activities
Net loss	$ (11)	$ (181)
Adjustments to reconcile net loss to net cash provided by (used in) operating activities:
Amortization	16	29
Stock-based compensation	9	8
Intellectual property disposed of by sale	147	0
Debentures fair value adjustment	22	(46)
Operating leases	(1)	(3)
Net changes in working capital items
Accounts receivable, net of allowance	3	36
Other receivables	4	4
Other assets	(62)	(9)
Accounts payable	(3)	(8)
Accrued liabilities	(14)	148
Income taxes payable	1	2
Deferred revenue	(12)	(22)
Net cash provided by (used in) operating activities	99	(42)
Cash flows from investing activities
Acquisition of long-term investments	1	0
Acquisition of property, plant and equipment	(2)	(1)
Acquisition of intangible assets	(8)	(8)
Acquisition of short-term investments	66	164
Proceeds on sale or maturity of short-term investments	39	226
Net cash provided by (used in) investing activities	(38)	53
Cash flows from financing activities
Issuance of common shares	2	3
Net cash provided by financing activities	2	3
Effect of foreign exchange loss on cash, cash equivalents, restricted cash, and restricted cash equivalents	0	(1)
Net increase in cash, cash equivalents, restricted cash, and restricted cash equivalents during the period	63	13
Cash, cash equivalents, restricted cash, and restricted cash equivalents, beginning of period	322	406
Cash, cash equivalents, restricted cash, and restricted cash equivalents, end of period	$ 385	$ 419